Vapor electric apparatus.



Y. SAKAI.

VAPOR ELECTRIC APPARATUS.-

APPLICATION FILED JUNE 14, 1912.

Patented Aug. 3,

INVENTOR I AT'TORNEY I! tr III I un'rrep snares YASUDIRO SAKAI, OF EASTPITTSBURGH, PENNSYLVANIA, ASSIG-NOR TO WESTING- HOUSE ELEC'IRIC ANDMANUFACTURING COMPANY, A CORPORATION OF PENN- SYLVANIA.

VAPOR ELECTRIC APPARATUS.

Specification of Letters Patent.

Patented Aug. 3, 1915.

fiers that are employed for changing high voltage alternating currentinto direct current.

lhe object of my invention is to provide a vapor electric device havingwalls surrounding the anodes of such construction as to provide foreffective ventilation and cool-.

ing of the anodes.

In the single figure of the accompanying drawing, which is a view inside elevation and in section of a rectifier embodying my invention, therectifier is shown as comprising a substantially pear-shaped casing 1containing a pool of mercury 2 in its lower smaller end whichconstitutes a vaporizable cathode. into the upper larger end of the pearshaped casing are two anodes, each of which comprises a leading in-wire3 and the anode proper, which is here shown in the form of a cup 4, butwhich may have any other suitable shape. The anode A is located in, andis surrounded by, a tubular envelop or casing 5, the lower end of whichopens into the main casing 1 and is preferably bent or shaped to opentoward the wall thereof, the upper end of the said tube being sealedaround the leading in-wire. The tubular envelop 5 is supported by anouter envelop 6 that is sealed or united at its upper end to the casino;1, and at its lower end to the envelop 5 at a suitable distance belowthe anode 41., the said outer envelop being enlarged or expandedadjacent to the upper end of the inner envelop 5 in order to provide aventilating space of suitable width.

' Extending into the upper end of the envelop 6 is a tube 7 that, issupported by means of a suitable number of arms 8, and the lower end ofwhich is enlarged and surrounds the upper closed end of the envelop 5.

During the operation of the device, it is immersed in any suitablecooling medium Extending at slight inclinations provides a ventilatingspace surrounding the inner envelop adjacent to the anode 4, the heatgiven off at the anode during the operation of the device is conveyedaway by the oil which is caused to circulate, the circulation of the oilbeing promoted by the tube 7 which serves, in effect, as a chimney, andcauses the heated oil to rise more quickly than it otherwise would.

I claim as my invention:

1. A vapor-electric or similar device comprising a casing, a terminalmember extending into the casing, an envelop for the terminal memberopening into the casing, and a second envelop surrounding the aforesaidenvelop adjacent to the terminal member and opening to the exterior ofthe casing.

2. In a vapor-electric or similar device, the combination with aterminal member and an envelop therefor, of another envelop surroundingthe aforesaid envelop adjacent to the terminal member, and a tubeextending into the outer envelop and adjacent to the end of the innerenvelop.

3. A vapor electric device comprising a casing, a terminal memberextending into the casing, an envelop for the terminal member openinginto the casing, and asecond envelop united at its ends respectively tothe casing and to the aforesaid envelop and providing a ventilatingspace adjacent to the terminal member.

4. A vapor electric device comprising a casing, a terminal memberextending into the casing, an envelop for the terminal memher openinginto the casing, a second envelop united at its ends respectively to thecasing and to the aforesaid envelop and providing a ventilating spaceadjacent to the terminal member, and a tube extending into the outerenvelop and adjacent to the end of the inner en elop.

In testimony whereof, I have hereunto subscribed my name this 31st dayof May, 1912-.

YA SUDIRO SAKAI.

Copies of this patent may be obtained for five cents each, by addressingthe Gommissioner of Patents Washington, D. 0.

